As it seems you might not have seen it, the current project is under GPL license and will not allow you to use it for anything commercial.
I have an MIT version of the code in development, which you will be able to use for commercial projects, but no ETA as I have to focus on my paid work first.
A one man team for a movie game project? And a beginner in UE4 and VR?
Well at least you’re gonna have a lot of fun!
But you’ll have to teach me how you got that job.
Concerning flying, I worked on such a system for a client and based on this experience, I wouldn’t recommend you to use the gesture recognizer for such behaviors.
It can work, but it’s just not done for it!
You can mirror a recorded gesture, but the how will depend of you and which data you used as input to the gesture.
I’d recommend doing it on the pawn BP directly.